<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #d1{
            width: 100px;
            height: 100px;
            background-color:  red;
            overflow: hidden;
            margin:25px 0 0 25px
        }
        #d1>div{
            width: 50px;
            height: 50px;
            background-color: blue;
            margin-top: 24px;
            margin-left: 24px;
        }
        #hello{
            width: 40px;
            height: 40px;
            border: 5px solid green;
            margin-left: 125px;
            border-radius: 5px;
            padding-top: 60px;
            padding-left: 60px;

        }

    </style>
</head>
<body>
<div id="d1">
    <div></div>
</div>
<div id="hello">哈喽</div>
</body>
</html>